DESCRIPTION

The mlib_ImageColorErrorDiffusion3x3() function converts a true color image to a pseudo color image with the method of error diffusion dithering. The source image can be an MLIB_BYTE or MLIB_SHORT image with three or four channels.
The destination must be a single-channel MLIB_BYTE or MLIB_SHORT image.

The last parameter, colormap, is an internal data structure for inverse color mapping. Create it by calling the mlib_ImageColorTrue2IndexInit() function.

PARAMETERS

The function takes the following arguments:

dst

Pointer to destination or destination image.

src

Pointer to source or source image.

kernel

Pointer to the 3x3 error-distribution kernel, in row major order.

scale

The scaling factor for kernel to convert the input integer coefficients into floating-point coefficients:

floating-point coefficient = integer coefficient * \
2**(-scale)

colormap

Internal data structure for inverse color mapping.

RETURN VALUES

The function returns MLIB_SUCCESS if successful. Otherwise it returns MLIB_FAILURE.